Security update for the Linux RT Kernel

Announcement ID: SUSE-SU-2022:0544-1
Rating: critical
References:
Cross-References:
CVSS scores:
  • CVE-2021-22600 ( SUSE ): 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVE-2021-22600 ( NVD ): 6.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:H
  • CVE-2021-39648 ( SUSE ): 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
  • CVE-2021-39648 ( NVD ): 4.1 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N
  • CVE-2021-39657 ( SUSE ): 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
  • CVE-2021-39657 ( NVD ): 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
  • CVE-2021-45095 ( SUSE ): 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
  • CVE-2021-45095 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
  • CVE-2022-0330 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2022-0330 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2022-22942 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2022-22942 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products:
  • SUSE Linux Enterprise Micro 5.0
  • SUSE Linux Enterprise Real Time 15 SP2
  • SUSE Real Time Module 15-SP2

An update that solves six vulnerabilities and has 11 security fixes can now be installed.

Description:

The SUSE Linux Enterprise 15 SP2 RT kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

  • CVE-2022-0435: Fixed remote stack overflow in net/tipc module that validate domain record count on input (bsc#1195254).
  • CVE-2021-45095: Fixed refcount leak in pep_sock_accept in net/phonet/pep.c (bnc#1193867).
  • CVE-2022-22942: Fixed stale file descriptors on failed usercopy (bsc#1195065).
  • CVE-2021-22600: Fixed double free bug in packet_set_ring() in net/packet/af_packet.c that could have been exploited by a local user through crafted syscalls to escalate privileges or deny service (bnc#1195184).
  • CVE-2021-39657: Fixed out of bounds read due to a missing bounds check in ufshcd_eh_device_reset_handler of ufshcd.c. This could lead to local information disclosure with System execution privileges needed (bnc#1193864).
  • CVE-2021-39648: Fixed possible disclosure of kernel heap memory due to a race condition in gadget_dev_desc_UDC_show of configfs.c. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation (bnc#1193861).
  • CVE-2022-0330: Fixed flush TLBs before releasing backing store (bsc#1194880).

The following non-security bugs were fixed:

  • bpf: Verifer, adjust_scalar_min_max_vals to always call update_reg_bounds() (bsc#1194227).
  • btrfs: tree-checker: Add EXTENT_ITEM and METADATA_ITEM check (bsc#1195009).
  • btrfs: tree-checker: annotate all error branches as unlikely (bsc#1195009).
  • btrfs: tree-checker: check for BTRFS_BLOCK_FLAG_FULL_BACKREF being set improperly (bsc#1195009).
  • hv_netvsc: Set needed_headroom according to VF (bsc#1193506).
  • net, xdp: Introduce xdp_init_buff utility routine (bsc#1193506).
  • net, xdp: Introduce xdp_prepare_buff utility routine (bsc#1193506).
  • net: allow retransmitting a TCP packet if original is still in queue (bsc#1188605 bsc#1187428).
  • net: mana: Add RX fencing (bsc#1193506).
  • net: mana: Add XDP support (bsc#1193506).
  • net: sch_generic: aviod concurrent reset and enqueue op for lockless qdisc (bsc#1183405).
  • net: sched: add barrier to ensure correct ordering for lockless qdisc (bsc#1183405).
  • net: sched: avoid unnecessary seqcount operation for lockless qdisc (bsc#1183405).
  • net: sched: fix packet stuck problem for lockless qdisc (bsc#1183405).
  • net: sched: fix tx action reschedule issue with stopped queue (bsc#1183405).
  • net: sched: fix tx action rescheduling issue during deactivation (bsc#1183405).
  • net: sched: replaced invalid qdisc tree flush helper in qdisc_replace (bsc#1183405).
  • net_sched: avoid resetting active qdisc for multiple times (bsc#1183405).
  • net_sched: get rid of unnecessary dev_qdisc_reset() (bsc#1183405).
  • net_sched: use qdisc_reset() in qdisc_destroy() (bsc#1183405).
  • nvme: add 'iopolicy' module parameter (bsc#1177599 bsc#1193096).
  • xfrm: fix MTU regression (bsc#1185377, bsc#1194048).

Special Instructions and Notes:

  • Please reboot the system after installing this update.

Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

  • SUSE Real Time Module 15-SP2
    zypper in -t patch SUSE-SLE-Module-RT-15-SP2-2022-544=1
  • SUSE Linux Enterprise Micro 5.0
    zypper in -t patch SUSE-SUSE-MicroOS-5.0-2022-544=1

Package List:

  • SUSE Real Time Module 15-SP2 (x86_64)
    • dlm-kmp-rt-debuginfo-5.3.18-73.1
    • kernel-rt-devel-debuginfo-5.3.18-73.1
    • kernel-rt_debug-devel-debuginfo-5.3.18-73.1
    • cluster-md-kmp-rt-5.3.18-73.1
    • kernel-rt_debug-debuginfo-5.3.18-73.1
    • kernel-rt_debug-debugsource-5.3.18-73.1
    • kernel-rt_debug-devel-5.3.18-73.1
    • kernel-rt-devel-5.3.18-73.1
    • gfs2-kmp-rt-5.3.18-73.1
    • cluster-md-kmp-rt-debuginfo-5.3.18-73.1
    • ocfs2-kmp-rt-debuginfo-5.3.18-73.1
    • dlm-kmp-rt-5.3.18-73.1
    • ocfs2-kmp-rt-5.3.18-73.1
    • kernel-rt-debuginfo-5.3.18-73.1
    • gfs2-kmp-rt-debuginfo-5.3.18-73.1
    • kernel-rt-debugsource-5.3.18-73.1
    • kernel-syms-rt-5.3.18-73.1
  • SUSE Real Time Module 15-SP2 (noarch)
    • kernel-source-rt-5.3.18-73.1
    • kernel-devel-rt-5.3.18-73.1
  • SUSE Real Time Module 15-SP2 (nosrc x86_64)
    • kernel-rt-5.3.18-73.1
    • kernel-rt_debug-5.3.18-73.1
  • SUSE Linux Enterprise Micro 5.0 (nosrc x86_64)
    • kernel-rt-5.3.18-73.1
  • SUSE Linux Enterprise Micro 5.0 (x86_64)
    • kernel-rt-debuginfo-5.3.18-73.1
    • kernel-rt-debugsource-5.3.18-73.1

References: